Question

54) Which of the following statements is FALSE?

a. Microbial cells exist as single cells.

b. Microbial cells carry out their life processes of growth independently.

c. Microbial cells include both bacteria and viruses.

d. Microbial cells exclude the cells of plants and animals.

------------------

55. The largest mass of living material on Earth comes from a. microorganisms. b. plants. c. animals. d. plants and animals together.

-----------------

56. In what/which domain(s) of life is/are microorganisms represented? a. Archaea b. Bacteria c. Eukarya d. Archaea, Bacteria, and Eukarya

-----------------

57. Regarding early life on Earth,

a. microbial life existed for billions of years before plant and animal life.

b. microbial life existed long before animals but has been around for about the same amount of time as plants.

c. microbial life, plant life, and animal life all appeared at about the same time.

d. it is impossible to determine which type of life first appeared. 2/6/18 10 58.

58) Which statement is TRUE?

a. Populations are assemblages of microbial communities.

b. Microbial communities are assemblages of populations.

c. Habitats are assemblages of microbial communities.

d. Populations are assemblages of habitats.

--------------

59. Microbial sterilization is used to

a. decrease the possibility of contaminants growing in a culture.

b. kill bacteria but not necessarily viruses or other microbes.

c. kill all microbes in or on objects. d. clean a work area.

d. clean a work area.

Answer 1

Ans54. c. Microbial cells include both bacteria and viruses. Viruses are different than other organisms. They show no signs of life but can replicate themselves.

Ans55. a. microorganisms. They are present everywhere on earth are very large in numbers.

Ans56. d. Archaea, Bacteria, and Eukarya. All the groups include microorganisms.

Ans57. a. microbial life existed for billions of years before plant and animal life.

Ans58. b. Microbial communities are assemblages of populations.

Ans59. b. kill bacteria but not necessarily viruses or other microbes.